Accessory for powered boom



Jan. 25, 1966 D. R. VlAU ACCESSORY FOR POWERED BOOM 2 Sheets-Sheet 1 Filed March 2, 1964 INVENTOR.

D ONAL D WA 1/ Jan. 25, 1966 D. R. VlAU 3,231,027

ACCESSORY FOR POWERED BOOM Filed March 2, 1964 2 Sheets-Sheet 2 I NVENTOR.

DON/4L0 V/Au BY ATTOE/YE/ United States Patent 3,231,027 ACCESSORY FOR POWERED BOOM Donald R. Viau, 22248 Haskell, Taylor, Mich. Filed Mar. 2, 1964, Ser. No. 348,504 Claims. (Cl. 173-46) This invention relates to tool mounts designed as accessories to existing power actuated levers or booms, mounted on wheeled chassis and normally employing a pivotally attached tool, such as a scoop or shovel, for

excavation purposes, and particularly to such tool mounts as afford application to said booms or levers of power operated hammers and the like.

An object of the invention is to provide a tool mount pivotally attachable in place of said scoop by the same existing means which attach said scoop.

Another object is to provide a tool mount formed with a working tooth which may be operated by'said lever, and to form on the mount a protuberance to serve as a fulcrum to afford increased leverage action by the tooth to pry bricks, for example, from a smelting furnace or the like.

Still another object is to provide a bracket, removably attachable upon the tooth, and formed with a keyway to receive a key carried by a power operated tool to dispose said tool in a desired position upon the tool mount, and to form flanges, along the sides of the key, to be engaged by retainers.

Another object is to provide one or more abutrnents upon the tool mount for engagement by said bracket to locate the bracket longitudinally upon the tool mount and resist longitudinally directed stresses.

Still another object is to so mount said bracket that the power operated tool overhangs the tooth, to be clear of said tooth, and to provide a support for such overhanging portion to avoid excessive laterally directed stress thereon from operation of the tool.

These and various other objects are attained by the construction hereinafter described, and illustrated in the accompanying drawings, wherein:

FIG. 1 is a side elevational view of the tool mount, with said bracket and power operated tool in position, and showing the lever in phantom line (alternate short and long lines).

FIG. 2 is a plan view taken on line 22 of FIG. 1.

FIG. 3 is an elevational end view on line 3-3 of FIG. 1.

FIG. 4 is a partial, vertical, sectional view on line 4-4 of FIG. 1, showing the key, keyway, flanges on the key, and said retainers.

FIG. 5 is a vertical, sectional view on line 4-4.

FIG. 6 is a view of the device showing the use of the aforesaid protuberance to increase leverage in the removal of bricks, designated by the letter E.

In these views, the reference character 1 designates an elongated tool mounting, flanked at its rearward end by plates 2. A pivot element 3 is secured at the bottom of said plates and spacers 4 are fixed on the pivot element. Gussets 5 further secure the pivot element to the plates 2. The described elements may be secured to one another in any conventional manner, as by welding. Registered holes 6 in the plates 2, receive a bolt A or the like to secure said tool mounting to a power take off member B. Hinged bearings C attach the tool mounting pivotally to the lever or boom D.

A tooth 7 is formed on the forward end portion of the tool mount. Said tooth may be used to pry loose the lining bricks of a steel furnace, and other such tasks. To afford greater efficiency at this work, a protuberance 8 is carried at the central portion of the tool mount to serve as a fulcrum whereby leverage may be exerted by the tOOth.

3,231,027 Patented Jan. 25, 1966 ice Greater versatility i afforded the present construction by construction of a bracket 9, including 'a fiat plate 10, carrying spaced ribs 11 which are joined by cross bars 12. A nut 13 threads on the end portion of a bolt 14 which passes through the ribs 11 and the tooth 7 to secure the bracket in position. Shims may be used to take up any clearance between said ribs and said tooth.

A power-operated tool is carried by the bracket, and this tool may take the form of an air-hammer, having, as shown, an air cylinder 15 fed from a source of compressed air not shown. Said cylinder is mounted in any convenient manner on a plate 16, which is formed with a key 17. Said key is received in a keyway 18 formed in the plate 10 to dispose the cylinder on the bracket in the desired position.

Formation of said key 17 leaves flanges 19 (FIG. 4) projecting laterally from the plate 16, and which rest upon the plate 10 marginally of thekeyway 18;. Retainers 20 are formed to overlap said flanges, and are secured by nuts 21 and bolts 22 to the plate 10.

Further support 23 is provided for the forward end portion of the cylinder 15, said support element 23 being secured to plate 10 by nuts 24 and bolts 25. Such arrangement enables the forward end portion of the cylinder to resist stresses, when the construction is employed, which will otherwise break the cylinder casing. 1 Any useful tool 26 may be operated by the air cylinder, such operation effecting a reciprocating action along the longitudinal axis of the tool. v

Stop blocks 27, aid in locating the bracket-"9 longitudinally upon the tool mounting and also relieve the bolt 14 of stress transmitted through said bracket when the powered tool is operating.

FIG. 6 shows the toothed mount prying bricks loose by use of the protuberance 8. While this particular use of the tool is of value in removing worn, brick linings of smelting furnaces, such leverage will obviously be employable in other circumstances.

While the described construction may have other uses, it was devised with particular reference to the removal of the brick lining of. smelting furnaces used in the manufacture of steel. After periods of, use which result in sufficient deterioration of such brick linings as to warrant their removal, it is frequently extremely difficult to dislodge the lining from the wall of the furnace. The construction hereinabove described is designed to extend through the comparatively small opening of said furnace so that the tooth 7 may be employed to pry loose the brick lining as illustrated in FIG. 6, and where necessary to employ the protuberance 8 as a fulcrum to afford increased leverage. In areas difficult of access, and in areas of particular difliculty in dislodgment of said bricks from the wall of the furnace, the power operated tool, comprising the air cylinder 15 and the actual operating tool 26, may be applied to the tooth and employed to weaken and break the brick. Once the brick has been broken and shattered to make its removal less difficult, the power operated tool may be removed and the tooth 7 employed to complete removal of brick lining.

What I claim is:

1. The combination with a lever, of

(a) an elongated tool mounting,

(b) a pivot element secured to an end portion of said tool mounting,

(c) means adapting said lever to pivotally receive said pivot element (b) for rotative actuation about the pivotal axis of said pivot element,

((1) means to effect said rotative actuation,

(e) a tooth formed on the opposite end portion of said tool mounting,

(f) a protuberance carried by said mounting at the "central portion thereof to serve as a fulcrum when said tooth is working,

(g) .a bracket,

(h) means to releasably secure said bracket upon the tooth,

(i) a power operated 1100],

( j) a keyway formed in said bracket,

(k) a key carried by the power operated tool and received in said keyway to dispose said tool in a des iredposition upon the tooth,

(l) laterally projecting flanges formed on the key and extending beyond the margins of said keyway (g),

(mfretainers engaging said flanges to resist escape of said key (k) from the keyway (i),

said tool being elongated to overhang a portion thereof beyond the end of said tooth,

(n) a supporting memben'encornpassing a portion of such overhang, said support being 'releasably secured to the plate, whereby excessive stress is resisted on said overhanging portion,

() one or more abutments secured to the tool mounting and engageable by the bracket (g) to locate said bracket longitudinally of the tool mounting.

' 2. The combination with a lever, of

(a) an elongated tool mounting having an end portion adapted for attachment to said lever,

:(b) a pivot element effecting such attachment to afford rotative actuation about its pivotal axis,

(c means adapting said lever to receive said pivot ele- '(d) means to effect said rotative actuation and dispose said tool mounting in desired positions about said pivotal axis, I

(e) a tooth formed on the opposite end portion of said mounting,

(f) a protuberance carried by said mounting at the central portion thereof to serve as a fulcrum when said'tooth is working,

(g) a bracket mounted upon said tooth,

(h) means to releasably secure said bracket upon said tooth, V

(i) a power operated tool, and

(j) means to releasably mount said tool upon said bracket.

3. The combination as set forth in claim 2, said bracket (g) including a plate formed with (k) a keyway, and

(l) :a key attached to said power operated tool and received in said keyway to dispose said tool in a desired position upon said tool mounting.

4. The combination asset forth in claim 3, said key having (In) laterally projectingflanges' which overlap said plate marginally of said key, and said means (j) including retainers, engaging said flanges and resisting escape of the key (1) from the keyway (k).

5. The combination'as set forth in claim 4, said bracket further including spaced ribs flanking said tooth (e), and said means (h) including a bolt extending through said ribs and said tooth.

References Cited by the Examiner HUGO 0,. SCHULZ, Primary Examiner. 

1. THE COMBINATION WITH A LEVER, OF (A) AN ELONGATED TOOL MOUNTING, (B) A PIVOT ELEMENT SECURED TO AN END PORTION OF SAID TOOL MOUNTING, (C) MEANS ADAPTING SAID LEVER TO PIVOTALLY RECEIVE SAID PIVOT ELEMENT (B) FOR ROTATIVE ACTUATION ABOUT THE PIVOTAL AXIS OF SAID PIVOT ELEMENT, (D) MEANS TO EFFECT SAID ROTATIVE ACTUATION, (E) A TOOTH FORMED ON THE OPPOSITE END PORTION OF SAID TOOL MOUNTING, (F) A PROTURBERANCE CARRIED BY SAID MOUNTING AT THE CENTRAL PORTION THEREOF TO SERVE AS A FULCRUM WHEN SAID TOOTH IS WORKING, (G) A BRACKET, (H) MEANS TO RELEASABLY SECURE SAID BRACKET UPON THE TOOTH, (I) A POWER OPERATED TOOL, (J) A KEYWAY FORMED IN SAID BRACKET, (K) A KEY CARRIED BY THE POWER OPERATED TOOL AND RECEIVED IN SAID KEYWAY TO DISPOSE SAID TOOL IN A DESIRED POSITION UPON THE TOOTH, (I) LATERALLY PROJECTING FLANGES FORMED ON THE KEY AND EXTENDING BEYOND THE MARGINS OF SAID KEYWAY (G), (M) RETAINERS ENGAGING SAID FLANGES TO RESIST ESCAPE OF SAID KEY (K) FROM THE KEYWAY (J), SAID TOOL BEING ELONGATED TO OVERHANG A PORTION THEREOF BEYOND THE END OF SAID TOOTH, (N) A SUPPORTING MEMBER, ENCOMPASSING A PORTION OF SUCH OVERHAND, SAID SUPPORT BEING RELEASABLY SECURED TO THE PLATE, WHEREBY EXCESSIVE STRESS IS RESISTED ON SAID OVERHANGING PORTION, (O) ONE OR MORE ABUTMENTS SECURED TO THE TOOL MOUNTING AND ENGAGEABLE BY THE BRACKET (G) TO LOCATE SAID BRACKET LONGITUDINALLY OF THE TOOL MOUNTING. 